class_docstr: A callable for parsing and resolving CSS to atomic properties
  
      
code: def atomize(self, declarations):
      for prop, value in declarations:
          attr = "expand_" + prop.replace("-", "_")
          try:
              expand = getattr(self, attr)
          except AttributeError:
              yield prop, value
          else:
              for prop, value in expand(prop, value):
                  yield prop, value
  
file_path: catboost/contrib/python/pandas/py2/pandas/io/formats/css.py
imports: import re
  import warnings
label_desc: Use image node_id 3 for calling the CSSResolver obj's underlying member method code with example usage: obj.atomize(declarations) without return types